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Army promotion Board 2021 > Land Nav TC 3-25.26 > Flashcards

Land Nav TC 3-25.26 Flashcards

1
Q

What publication covers MAP READING and Land Navigation?

A

TC 3-25.26

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2
Q

What is the definition of a map?

A

A map is a graphic representation of a portion of the earth as it would be seen from above.

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3
Q

What does a map provide?

A

Information on the location of, and the distance between ground features.

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4
Q

What are the basic colors of a map, and what does each color represent?

A

Black

Red/Brown

Blue

Green

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5
Q

What are military symbols?

A

Figures used to represent military installations and activities

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6
Q

Where is the Legend of the map found?

A

Lower left margin

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7
Q

What are contour lines?

A

Imaginary lines on a map that represent high and low ground elevation

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8
Q

What are the 3 kinds of contour lines?

A

Index

Intermediate

Supplementary

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9
Q

How many mils are in 1 degree?

A

17.7 mils

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10
Q

How many North’s are on a military map?

A

3

True north

Magnetic north

Grid north

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11
Q

What must be done to a map before it can be used?

A

The map must be oriented by using a compass and terrain association

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12
Q

What are 5 major terrain features found on a map?

A

The 5 major terrain features are hill, ridge, valley, saddle & depression

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13
Q

What are the 3 minor terrain features found on a military map?

A

The 3 minor terrain features are draw, spur and cliff

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14
Q

What are the 2 supplementary terrain features found on a military map?

A

The 2 supplementary terrain features are cut and fill

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15
Q

What is an azimuth?

A

A horizontal angle, measured in a clockwise manner from a north base line, expressing direction

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16
Q

What is vertical distance?

A

The distance between the highest and lowest points measured

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17
Q

Which north is used when using a military map?

A

Magnetic north when using a compass, and grid north when using the map

18
Q

Why is a map so important?

A

When used correctly, a map can give you accurate distances, locations and heights, best routes key terrain features and cover and concealment information.

19
Q

If you find a symbol on a map that is unknown to you, where would you look?

A

The marginal data, located on the outside lower portion of the map

20
Q

What are the three main map sizes?

A

Small, medium & large

21
Q

What are two methods of measuring an azimuth?

A

Compass & protractor

22
Q

How close will an eight-digit grid get you to your point?

A

10 meters

23
Q

How close will an six-digit grid get you to your point?

A

100 meters

24
Q

What would you use on a map to measure actual ground distance?

A

The bar scale

25
Q

What is the name of the map system that the U.S. uses?

A

UTM

26
Q

What should you do with a map that is in danger of being captured?

A

Destroy it

27
Q

Why should you destroy a map that is in danger of being captured?

A

Because it could contain troop movements or positions of friendly soldiers.

28
Q

How many different types of maps are there?

A

8

29
Q

What should you use if Military Maps are not available?

A

Substitute maps.

Foreign military or commercial maps, to field sketches.

7

30
Q

What should a soldier do prior to using a particular map?

A

Read the instructions & orient it

31
Q

What does UTM stand for

A

Universal Transverse Mercator

32
Q

How many miles are there in 1 circle

A

6400 mils

33
Q

What does the term intersection mean?

A

It’s the process of finding an unknown point by using 2 or more known points. Your unknown point will be where the 2 known points intersect.

34
Q

What does the term resection mean?

A

Method of finding your location on a map by finding the azimuth of 2 or more locations. Your location will be where they cross

35
Q

Military symbol colors

A 
Blue friendly forces
Red enemy
Black boundaries 
Yellow contaminated
Green engineer obstacles
36
Q

You must find at least how many known locations on a map and the actual ground in order to plot your location accurately?

A

Atleast 20

37
Q

How do you read a map

A

Right up

38
Q

How many meters are there between on grid lines on map

A

1000

39
Q

What is true north ? *

A

True north is the North Pole itself

40
Q

What is magnetic north?

A

The direction that the compass needle aligns with the earth’s magnetic field

Arrow head

41
Q

Grid north

A

Refers to direction northward along the grid lines of map

Army promotion Board 2021 (21 decks)

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